secretary of state hillary clinton and egypt's foreign minister announced a truce between israel and hamas. >> the united states welcomes the agreement today for a cease- fire in gaza. for it to hold, the rocket attacks must end. a broader calm returned. >> reporter: the agreement follows a week of fighting between israel and palestinian militants controlling the gaza strip. clinton says the united states will help the region make this agreement last. >> ultimately, every step must move us toward a comprehensive peace for all the people of the region. >> reporter: the truce calls for israel to ease restrictions at the gaza border. israeli prime minister benjamin netanyahu agreed to a cease- fire after president obama called and urged him to give it a chance. earlier wednesday, an explosion tore through a bus in a busy section of tel aviv. emergency crews rushed to the scene to treat the injured. hamas has not claimed responsibility but praised the attack. today the white house called the bus bomb in tel aviv a terrorist attack and reaffirmed the u.s. commitment to israel's security.